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  • Pi 4 USB boot now working

    From chris@tinnews.co.uk@3:770/3 to All on Thu Dec 16 11:57:49 2021
    Just to report success (at last) with getting my Pi 4 to boot from USB.

    The problem I was having with the 500Gb USB drive was either due to
    power problems or timing, I'm not sure which. As reported in the
    original thread about this the Pi booted from this drive OK when it
    was plugged into one of the USB-2 sockets but failed to boot (from the
    USB) when it was plugged into one of the USB-3 sockets.

    I have now put an old[ish] 320Gb drive in a SATA to USB-3 box which has
    it's own power supply and that works perfectly when plugged into one
    of the USB-3 sockets.

    Having configured the eeprom to look for USB *before* SD it boots from the
    USB if the USB is there. This is rather handy as I was then able to
    mount the SD card and copy files from there to the new installation.

    Just for interest (and in response to another query/suggestion here)
    /etc/fstab is:-

    proc /proc proc defaults 0 0
    PARTUUID=e258a3fc-01 /boot vfat defaults 0 2
    PARTUUID=e258a3fc-02 / ext4 defaults,noatime 0 1
    # a swapfile is not a swap partition, no line here
    # use dphys-swapfile swap[on|off] for that

    I.e. the /boot and / partitions are recognised solely by their
    partition IDs, no device names in there at all.



    --
    Chris Green
    ยท

    --- SoupGate-Win32 v1.05
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
  • From A. Dumas@3:770/3 to chris@tinnews.co.uk on Thu Dec 16 16:16:32 2021
    On 16-12-2021 12:57, chris@tinnews.co.uk wrote:
    Just for interest (and in response to another query/suggestion here) /etc/fstab is:-

    proc /proc proc defaults 0 0
    PARTUUID=e258a3fc-01 /boot vfat defaults 0 2
    PARTUUID=e258a3fc-02 / ext4 defaults,noatime 0 1
    # a swapfile is not a swap partition, no line here
    # use dphys-swapfile swap[on|off] for that

    I.e. the /boot and / partitions are recognised solely by their
    partition IDs, no device names in there at all.

    Which is what you want, otherwise when, for some random reason, the
    devices get swapped at boot (sda<->sdb), nothing works anymore.

    --- SoupGate-Win32 v1.05
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)